[Samson]

I have a 06 touring non convertible, dont think it has the boston system.
I am putting in a Kenwood X993, and want to upgrade the front and rear door speakers. What size are the door speakers? When I measure across the door panel molded grill its about 5", but Im guessing by previous threads that the speakers might be 6.75? Should I replace the dash speakers? I wasnt planning on replacing the dash speakers unless it is absolutely necessary.

Also, are good speakers to go with, matched to this head unit?

Thank you very much for any help